So, Russia and Ukraine are still as far apart as ever, with the two warring countries unable to make a significant breakthrough in direct talks in Istanbul.

Delegations from the warring sides met for barely an hour and agreed to exchange more prisoners of war - focusing on the youngest and most severely wounded - and return the bodies of 12,000 dead soldiers.

Report, Andrea Heng and Hairianto Diman track the latest developments from the second round of direct ceasefire talks between Russian and Ukrainian officials in the Turkish city of Istanbul as US President Donald Trump threatens to walk away if both countries are too stubborn to reach a peace deal.